Somewhat related - I tried connecting my Stadia controllers to both my phone and PC recently but was unable to until I disabled VPN on both. I tried with 2 Stadia controllers and on different devices...
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Somewhat related - I tried connecting my Stadia controllers to both my phone and PC recently but was unable to until I disabled VPN on both. I tried with 2 Stadia controllers and on different devices with various ports unblocked. Once the VPN is disabled the controllers are able to connect to the phone or PC client just fine. Not sure if there is another workaround, just something you may also want to keep in mind if you plan on using Stadia controllers too.